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Algal Biofuels - Diesel - History
"It's exciting because it's achievable," says Peter van den Dorpel, as he looks over the big plastic tubes full of various shades of green algae.
Science & Environment | In bloom: growing algae for biofuel
It is four o'clock in the morning and Cicero Montiro de Silva is up and getting ready for the field. He is a sugarcane cutter and it is harvest time.
Hard graft: sugarcane for biofuel
28 May 2010 Last updated at 09:09 GMT By Camilo Rocha Sao Paulo Street art: a section of the graffiti in Sao Paulo's Vila Madalena district

